Horseshoe-nail machine



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\ To nall whom t` may concern UNITED sTATES PATENT OFFICE.

.. MARSHALL BURNETT, OF BOSTON, MASSACHUSETTS.

j HORSESI-IOE-NTIL MACHINE.

\ Specicationof Letters Patent 8,006,` dated April l, 1851.

Be it known thatl, MARSHALL BURNETT, of Boston, in thecounty of Suffolkand State of Massachusetts, have invented a new and useful Improvementin Machines for Making `Horseshoe-Nails;` and I do hereby declare the following to be a full, clear, and

exact: description of the construction and operation of the same, referencebeing had to the accompanying drawingsl part thereof, in Which--` i Figure l is a side view, showing the rack and spur-wheels which give `motion to the cams that form the front of the nail. Fig.

2, a view from the rear of the machine,

making a showing the rack `and spur-wheels, which` operate the cams that `form the sides of the nail. Fig. 3, represents a section through the red line 03 m, of Fig. 2. Fig. 4, represents a sectionthrough the red line y, y, of Fig. l, and Figs. 5 and 6, details of parts of the machine not `distinctly seen in the other figures. 1 i y j `Similar letters in the several figures represent the same parts. x f

`The nature of my inventionconsists in arranging` a series of cams in a` sliding frame, said `cams being operated by spur wheels placed on the same shaft with them, and the` said spur wheels receiving their motion, and being guided 1n their movements 1n forming and drawing out the nails `by stationary racks which are formedl on the upright frame of the machine,so' that said sliding frame of cams, will in being brought down by the lever or pitman which moves it, form the head, front, and sides of` the nail, the fourth side receivingits proper shape by being pressed by the action of the cams against a former placed on the rear ofa feeding bar, and when the nail ris finished it is cut from the nail rod by a knife or cutter arranged upon the upper part of the said sliding frame of cams, and drops through a slot in the front of the machine into a boX or other receptacle arranged for that purose. p To enable others skilled in the artto make and use my invention, I will proceed to describe the same with reference to the drawin s. j i

gOn a frame A, I arrange the four uprights B, B and C, C, two ofl which uprights B B, have angular grooves a, a, Fig.

5, cut in them for the sliding frame of cams D to move and be guided in; the other uprights CC, have a rack b, formed in their edges neXt the spurwheels which they are intended to operate (each upright operating by means of its rack a separate set of spur Wheels)- in place by a cap piece E, to which they are firmly secured. On the rear cross: piece of the frame, is placed a standard to which is hinged or jointed the connecting arm Gr, by means of the pin 0, upon which it moves. To the top o-f the connecting arm Gr, is joint-ed or hinged the lever H, which may extend tothe front of the machine, for the convenience of the operator. H, is secured by a joint near one of its ends the connecting bar I, the other endbeing attached by a similar joint to the sliding' frame of cams, so that by pressing on the` lever either bythe hand or foot, the sliding frame of cams" is brought down, the joints The four uprights are fastened` To. said lever and connections between the said sliding.

frame and standard F, preventing the said Arotary motion, and communicate the same to the spur `wheels c, which are `fastened upon the ends of the shaft-s f, and upon the other `ends of said shafts are arranged the cams g,

which form the front of the nail, said cams having recesses L, cut in their peripheries for forming the head `of the nail., and the perpheries of said cams are so formed as to give the proper `taper to the nail, that is to say, `afterithe recess in thecam has formed a part of the head, the periphery ofthe cam gradually approximate the former against which the nail rests, and draws down thenail until atthe lower end of the former it comes down to a point.` Immediately following the cams, g, which forms the frontof the nail, and alternating with j them, are the cams z', for pressing and drawing down the sides of the nail, andwhich will be hereafter described.

On the rear of the sliding frameof cams D, Fig. 2,- are arranged the series of-spur wheels 7c, `which mash `into the rack b', on i `the upright c, and which spur' wheels la, when theframe `is moved up and down receive and communicate a rotary motion t-o 11e i n the spur wheels Z, which in their' turn communicate motion to another set of spur wheels m. The spur wheels Z, m, are fastened to one end of the shafts 0, which shafts have their journals resting in the sliding frame; to the other ends of said shafts, are arranged the series of cams z', set opposite to, and rotating toward each other, said cams having recesses in their peripheries for` forming the projections on the sides of t-he nail at top, and which, together with the projection on the front, left by the recesses in the Vcams g, form the head of the nail. The peripheries of the cams i, approach each other as the frame descends, drawing the nail to a point on its sides. The shape of the nail, its length, and the size of the head, may all be regulated by the form of the cams, their size, and the recesses left or made in the peripheries thereof.

On top of the sliding frame above the cams, and projecting downward, is a cutter J, which cutter after the cams have completed the nail, cuts it off from the nail rod, when it drops through the slot in the front of the sliding frame, into a boX or other receptacle placed there for that purpose.

Extending across, and framed or otherwise secured to the uprights B, B, so that its top will come just below the sliding frame D, when at its utmost height, is the feeding bar K,` Fig. 6 on which are arranged jaws or guides and supports L, M, alsoy seen by dotted lines in Fig. 4, between which jaws, the nail rod when heated is inserted and firmly held. The length of the nail rod inserted or from which the nail is to be formed is regulated by a gage 0, attached to a ledge P, projecting from the under side of the bar K, and which may be made adjustable if necessary. On the back of the cross bar K, is placed the former Q, Fig. 5, also seen in dotted linesfin Fig. 4, against which the portion of the nail rod inserted is bent down and pressed, by the first of the series of cams g, as the frame is drawn down, and against which former the nail rests until operated upon by the whole series of cams in succession and until finished, and cut off from the nail rod by the cutter J, as hereto-v fore described.

The machine is here represented as adapted for being worked by hand, but may be driven by any other power, by attaching a pitman to the sliding frame for moving it up and down, or it may be dra-wn down by any other arrangement of machinery, and forced back by a spring, weight and pulley, or any other device-the nail being formed by the downward motion of the sliding frame, the only power required for raising it up, would be such, as would be sufficient to raise the frame.

The operation is as follows: The nail rod being heated, is inserted between the jaws on the feeding bar until it reaches the gage plate, when the frame is drawn down and it is caught by the first of the series of cams which forml the front of the nail, and is bent down by it at right angles to the said nails rod, and forced against the former, the series of cams both on t-he front and sides of therod catching alternately on the front and sides of the rod, and drawing it down to the desired shape, the recesses in the cams forming the head, and the former against which it rests shaping the fourth side, until the cams have all passed over it, when the cutter cuts off the nail, and it drops as before described into the receptacle placed for that purpose. The stationary rack causes the spur wheels, and the cams driven by them, to always retain the saine position at starting, and bringing the series down in proper position for forming the head and the body of the nail.

Having thus fully described my invention what I claim therein as new and desire to ysecure by Letters Pat-ent, is,

Making a horse-shoe nail by means of a stationary former and a series of traveling and rotating cams arranged and operating substantially as herein described and fully shown.

MARSHALL BURNETT. Witnesses A. B. STOUGHTON, T. C. DONN. 

